| **Goodwill And Other Intangible Assets**                 | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
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| **Goodwill and Intangible Assets Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Goodwill and Other Intangible Assets                     | GOODWILL AND OTHER INTANGIBLE ASSETSThe changes in the carrying amount of goodwill for the fiscal years ended January 2, 2016 and January 3, 2015 were as follows (in millions):Balance as of December 28, 2013$3,524NeuroTherm125Spinal Modulation(36)Foreign currency translation and other(81)Balance as of January 3, 20153,532Thoratec2,142Foreign currency translation and other(23)Balance as of January 2, 2016$5,651The following table provides the gross carrying amount of other intangible assets and related accumulated amortization (in millions): January 2, 2016 January 3, 2015 GrossCarryingAmount AccumulatedAmortization GrossCarryingAmount AccumulatedAmortizationDefinite-lived intangible assets:       Purchased technology and patents$1,840 $578 $1,162 $473Trademarks and tradenames115 16 22 13Customer lists and relationships21 16 19 14Licenses, distribution agreements and other6 2 7 2 $1,982 $612 $1,210 $502Indefinite-lived intangible assets:       Acquired IPR&D$829   $116  Trademarks and tradenames27   27   $856   $143   See Notes 8 and 11 for further information on the Company's intangible asset impairment charges.The following table presents expected future amortization expense for acquired intangible assets recognized as of January 2, 2016 and expected amortization expense of indefinite-lived IPR&D assets based on anticipated regulatory product approvals (in millions):           After 2016 2017 2018 2019 2020 2020  Amortization expense$184 $222 $237 $231 $220 $1,105The expected amortization expense is an estimate. Actual amounts of amortization expense may differ due to actual timing of regulatory approvals, additional intangible assets acquired, foreign currency translation impacts, impairment of intangible assets and other events. |

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No definition available.
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| - Definition
The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final.  May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.
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